tasklets don't allow invocation to sleeping routines. In configure_dma()
routine, sg_alloc_table() was called with GFP_KERNEL flag and so this causes
crash when called from tasklet.
Replace GFP_KERNEL with GFP_ATOMIC to get this fixed.
Signed-off-by: Viresh Kumar <viresh.ku...@st.com>
Tested-by: Linus Walleij <linus.wall...@linaro.org>
---
drivers/spi/spi-pl022.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f600d00..80116be 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1019,11 +1019,11 @@ static int configure_dma(struct pl022 *pl022)
pages = (pl022->cur_transfer->len >> PAGE_SHIFT) + 1;
dev_dbg(&pl022->adev->dev, "using %d pages for transfer\n", pages);
- ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_KERNEL);
+ ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_ATOMIC);
if (ret)
goto err_alloc_rx_sg;
- ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_KERNEL);
+ ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_ATOMIC);
if (ret)
goto err_alloc_tx_sg;
--
1.7.2.2
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